Ellos summer split side dress. NWOT

Beautiful Ellos floral v-neck cross front spaghetti strap dress. Split on both sides to the knee. Adjustable spaghetti straps. Elastic under bust. Ellos size 10 is equal to a US size small. See size chart. I tried it on and it fits me and I am a size small. Armpit to armpit 17” across (not stretching out pleats in bust.) Under bust at elastic 15-19” elastic 002022